Science Fair Project Encyclopedia
Quebec class submarine
Quebec-class submarines were fitted with two regular diesel engines and a third, closed-cycle diesel engine, which used liquid oxygen (LOX) to provide air-independent propulsion while the submarine was submerged. This system produced remarkable submerged speed and range, and greatly increased the risk of explosion or fire.
The M-256 was lost from this cause. Quebecs were referred to by their crews as "cigarette lighters."
Around forty were built between 1953 and 1957 of the 100 planned before the project was abandoned and the Soviet Union followed the lead of the United States and developed nuclear powered boats. The last were retired in the 1970s.
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